Newbie Question - Water Heater on or off?

Mike Brace replied on 20/10/2016 09:09

Posted on 20/10/2016 09:09

Hi guys,

First post from me as a newbie to the club along with being a newbie to caravanning in general too!

Firstly, i've already learnt a lot from everyone's posts and I feel that joining the CC has already been greatly justified, very chuffed with that.

Secondly, it's been eye opening to see how many discussions there are on weights etc and I realise that there are so many people who are towing out on the road illegally, either through blissful ignorance or choice. We had an absolute nightmare couple of weeks where we had to learn very quickly about the minefield of towing laws and essentially were told that our car was not suitable for the van that we wanted (Alfa 147) so we researched online and found that a diesel Focus 1.8 had a towing capacity that suited. Found a suitable Focus and bought it (after checking the V5 twice to confirm that the braked capacity was enough) only to find out later that the plated weights told a different story and that wasn't suitable either.....we'd just paid £5k in cash that afternoon and then I found this out. Fortunately, the dealer had a nice CRV in good nick so we swapped for that :)

AAAAaaanyway......my question! :) We are venturing out this weekend for our 1st trip in the caravan and I wanted to know whether you guys recommend leaving the water heater on at all times or do you just switch it on prior to needing it? I hate wasted energy so would prefer to turn it off before bedtime and on again in the morning but if it takes forever to heat up (we intend on showering in the van) then that might not be practical.

Advice please oh wise ones Laughing

Tinwheeler replied on 20/10/2016 11:03

Posted on 20/10/2016 11:03

OK, makes sense with the thermostat bit. I think then what i'll do is turn it off at night and flick it on in the morning as part of that cuppa routine and let it do it's thing. We only intend on being in the van for the morning and evening as plan on  being out for the daytime but i'll leave it on thorugh the day based on feedback given. Seems silly to leave it on all night even if it uses little energy as i'll definately not be getting up to do the dishes.

 

Thanks all!

It's your choice, Mike, but you're doing a bit of fence sitting there. Why only let the thermostat do its job by day but turn the boiler off overnight?

If you leave the boiler on overnight when no cold water will be added to the boiler to replace used hot, the thermostat will trigger the use of only negligible power. Turning it off and then on in the morning will use more power to heat from the decreased temp all in one go. 

Up to you. 

replied on 20/10/2016 11:06

Posted on 20/10/2016 11:06

At this time of year any heat loss from the stored hot water is not wasted - it can only add heat to the caravan.

Tinwheeler replied on 20/10/2016 11:06

Posted on 20/10/2016 11:06

I support TW's view and we do the same both in the van and at home.

peedee

Yes, PD, we do the same at home as well. We let the thermostat do its job and just have different temp settings for the heating throughout the 24 hr period. 

KjellNN replied on 20/10/2016 11:17

Posted on 20/10/2016 11:17

It depends where we are, but 90% of the time we would leave it on, 100% on if in UK.

In summer, if on a metered pitch (common in Germany) we would only heat the water when we actually want to use it, and then probably use gas for that.  We would also use the site facilities more than we usually do.

At home, our HW is always on.

Fysherman replied on 20/10/2016 11:53

Posted on 20/10/2016 11:53

while in the caravan the hot water is always on, but at home it's a combi boiler so hot water is on demand

Same here.

Read somewhere a trial has been done with domestic immersion heaters and they concluded it uses less energy to leave them on all the time. Probably the same with caravan heaters.

JVB66 replied on 20/10/2016 11:57

Posted on 20/10/2016 11:57

We have an "ECO" position on our van water heater  so leave it on all the time ,and just alter to boost to make it hotter,if needed

Whittakerr replied on 20/10/2016 11:59

Posted on 20/10/2016 11:59

while in the caravan the hot water is always on, but at home it's a combi boiler so hot water is on demand

Same here.

Read somewhere a trial has been done with domestic immersion heaters and they concluded it uses less energy to leave them on all the time. Probably the same with caravan heaters.

All depends on the efficiency of the thermal insulation.

tigerfish replied on 20/10/2016 12:00

Posted on 20/10/2016 12:00

I'm with TW and others. My water heating is switched on as soon as we arrive on a site and only goes off when we leave.

TF

Rocky 2 buckets replied on 20/10/2016 12:05

Posted on 20/10/2016 12:05

while in the caravan the hot water is always on, but at home it's a combi boiler so hot water is on demand

Same here.

Read somewhere a trial has been done with domestic immersion heaters and they concluded it uses less energy to leave them on all the time. Probably the same with caravan heaters.

+1 Fysh. Domestic heating that isHappy

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